split mirror backups
From: joel garry <joel-garry_at_home.com>
Date: Thu, 1 Dec 2011 10:29:43 -0800 (PST)
Message-ID: <70893f89-e4c1-49fa-adfa-9e209e9e6ca4_at_l19g2000yqc.googlegroups.com>
In http://docs.oracle.com/cd/E11882_01/backup.112/e10642/osbackup.htm#i1006658 it sez:
Date: Thu, 1 Dec 2011 10:29:43 -0800 (PST)
Message-ID: <70893f89-e4c1-49fa-adfa-9e209e9e6ca4_at_l19g2000yqc.googlegroups.com>
In http://docs.oracle.com/cd/E11882_01/backup.112/e10642/osbackup.htm#i1006658 it sez:
"You do not need to use SUSPEND/RESUME to make split mirror backups, unless your system requires the database cache to be free of dirty buffers before a volume can be split. Some RAID devices benefit from suspending writes while the split operation is occurring; your RAID vendor can advise you on whether your system would benefit from this feature."
Is that "database cache" some reference to needing to checkpoint or something, or is it a typo and should have been something about the raid cache?
I haven't worked on splits in this century yet, and may have to work on some newfangled thing soon, so I'm wondering what people really have to do. Naturally I'm going to be skeptical about what the vendor advises.
jg
-- _at_home.com is bogus. http://www.signonsandiego.com/news/2011/dec/01/icons-america-hate-turns-honor-time-passes/Received on Thu Dec 01 2011 - 12:29:43 CST